Flashcards in P6 Waves Deck (25):
A wave that vibrates at right angles to the direction of travel ( light and electromagnetic radiation)
A wave which has the vibrations along the sa,e direction as the direction it travels( sound and spring)
Area where the particles are closest
Area where the particles are furthest away.
The distance between a point on one wave and the same point on the next wave.
Displacement of waves
Measure of the distance of a particle from its equilibrium position in a medium as it transmits a second wave . It is measured in metres(m)
The number of waves passing a point. Measured in HZ (hertz)
Period of waves
The frequency increases , the time period decreases. It is measured in seconds.
Maximum distance moved by a point on a wave measured from the equilibrium position
The top of a transverse wave
The bottom of a transverse wave.
Speed of a wave
( velocity) Speed = frequency x wave length
What happens when waves travel through a medium
Oscillate and transfer energy between each other , but the particles stay in the same place, only energy id transferred
V = frequency x wavelength.
What is the wave speed?
The soeed at which the energy is being transferred.
What happens when a wave meets a boundary?
- the wave is absorbed
- wave is transmitted
- the wave is reflected
What happens when a wave is absorbed?
The second material absorbs the wave . The energy is transferred to the materials energy store.
What happens when a wave is transmitted
Th waves carry on travelling though the new material
What happens when a wave is reflected?
The wave is sent back away from the material.
What type of waves are electro magnetic waves?
Where do the electromagnetic waves send their energy ?
To an absorber.
Characteristics of EM waves
- travel at the same speed through air or a vaccum
- vary in length
Waves changing direction at a boundary